Poly Peptone Yeast Extract Medium - Names and Identifiers
Poly Peptone Yeast Extract Medium - Introduction
Polyvalent peptone-yeast extract (PY) medium is a classic bacterial medium that is commonly used to culture and study many different types of bacteria. The following is a description of its characteristics, uses, preparation methods and safety information:
1. Nature:
-Polyvalent Peptone-Yeast Extract Medium is a complex medium rich in peptone and yeast extract. Peptone provides amino acids, peptides and other nutrients, while yeast extract contains vitamins and other organic compounds that provide essential nutrients for bacteria.
-The pH of the medium is usually kept at around 7.0 to suit the growth of bacteria.
-The medium may also contain some auxiliary components such as glucose, salts, etc.
2. Use:
-Polyvalent peptone-yeast extract medium is widely used for the cultivation of common Gram-positive and negative bacterial strains, such as Escherichia Coli, Staphylococcus, etc.
-Through the preparation of the medium, antibiotics or other inhibitory substances can be selectively added to selectively cultivate specific types of bacteria.
-Can also be used for bacterial colony counting, purification and pre-preparation of cultures.
3. Preparation method:
-Each liter of medium may contain 10 grams of peptone and 5 grams of yeast extract. It can be prepared by dissolving these components by heating distilled water and autoclaving at an appropriate temperature.
4. Safety Information:
-During preparation and use, pay attention to hygiene measures to avoid bacterial contamination.
-The medium may contain allergens, so it should be used with caution in people with allergies.
-When handling media and bacteria, be careful to avoid inhalation or contact with bacteria to prevent infection.
-Please store the medium according to the correct storage method, avoid exposure to moisture or high temperature environment.
It should be noted that when using specific experiments and applications, it is recommended to refer to the corresponding scientific research literature, technical specifications or consult the opinions of professionals.
Last Update：2024-04-09 20:49:11